Are my PDF files uploaded to a server?

No. The merge runs entirely in your browser using WebAssembly, so the files never leave your device and we never see their contents.

Is there a file size limit?

There is no server limit. The practical limit is your device's available memory, which comfortably handles documents of a few hundred megabytes on most modern computers.

Will merging reduce the quality of my PDF?

No. Pages are copied across as-is, so text stays selectable and images keep their original resolution.

ToolMano

Merge PDF

Combine several PDF files into one document.

No uploadNo signupWorks offline

Drop files here or click to choose

PDF files only · nothing is uploaded

Up to 20 MB · 3 files at a time

Sort order

Output filename

Quick presets

Choose PDF files above to start.

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About merge pdf

Merge PDF combines two or more PDF files into a single document in the order you choose. Drop the files in, drag them into the right sequence, and download one merged PDF — no account, no watermark and no waiting in a queue.

Unlike most online PDF mergers, this one never uploads your documents. The merge happens inside your browser tab, which means contracts, invoices, medical records and anything else confidential stay on your own machine. Nothing is stored, so there is nothing to delete afterwards.

How to use Merge PDF

1Select or drag in the PDF files you want to combine.
2Drag the files to set the page order of the final document.
3Press Merge PDF and download the combined file.

What it does

Unlimited page count — limited only by your device memory
Keeps original page size and quality, no re-compression
Reorder files before merging
Works offline once the page has loaded

Frequently asked questions

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